Nowhere.
no there are not
there is no scientific evidence that vampires exist. therefore vampires cannot be dangerous if they do not exist.
Nope.
There is no scientific evidence to support the existence of vampires as supernatural beings that feed on the blood of the living. Vampires are primarily found in folklore, literature, and popular culture.
No. Vampires are found in your imagination, nowhere else.
A wizard is a studier and user of magic; as such, many do exist for a given value of 'magic'. However, there is no evidence for either ghosts or vampires (and no, "I saw/am one!" is not evidence).
While there are stories of vampires and vampire like creatures in the mythologies of most cultures, there is no scientific or other evidence that vampires have ever existed. So, no.
transylvania
As vampires are mythical creatures and purely fictional they can be found anywhere the author decides to put them.
No, because vampires do not exist; they are fictional characters.
There has been no evidence of such an ancestor.
No. There is no real evidence of them existing and they are biologically impossible.